Marine Systems Design

Outline of the design process for marine systems with main emphasis on displacement vessels, but also design for offshore marine energy production and aquaculture facilities development: Arrangement, main dimensions, weight, volumes, lines sketch. Cost-estimation. Control of freeboard, intact-stability, damage-stability and buoyancy. Stability accidents. Characteristics for semi submersible platforms. Application of computer programs in marine design and stability calculations. The aspects of the design process in greater depth. Short introduction to logistics for design and operation. Project evaluation / economic criteria. Short on the cost structure in shipping and the shipping company's business functions. LAB Demo (resource dependent). Compulsory project/termpaper regarding design of a marine system. The project/term paper may be continued towards participation in a marine system design competition for students.

The subject shall give the students an introduction to elements of preliminary design and operation/ running of displacement vessels and semi submersibles.
After completed course the students shall be able to:

- Understand the principles in "System Based Ship Design" (SBSD) and be able to perform a simple preliminary design job.
- Know the main elements in creativity as applied in preliminary ship design.
- Evaluate alternative kinds of ship types, -functions and -arrangements, ship main dimensions, propulsion systems and equipment (when performing ship preliminary design).
- Calculate/estimate weights, volumes and costs for common types of ships and ship arrangements.
- Use the data material for the different ship types and –arrangements in the book: Kai Levander: System Based Ship Design, NTNU, 2012.
- Understand important stability accidents and their consequences and explain how these accidents could possibly have been avoided.
- Understand the principles for and do a simple freeboard calculation.
- Understand the principles for intact- and damage-stability control for ships and semi submersibles, be able to use the control-diagrams.
- Understand important characteristics for ships and semi submersibles and be able to explain how these shall be taken into account in design and operation.
- Define permeability.
- Understand the risk level by different kinds of damages with water ingress.
- Understand and to be able to see the difference between the Lost Buoyacy- and the Added Weight-method,
- Use the LB-method for manual calculations for simple damage stability problems.
- Understand the principles used in the probabilistic damage stability rules.
- Understand the deadweight equation and be able to solve simple variants by the use of Normand’s number.
- Understand the structure in formulas showing hull steel weight varitions directly as a function of the ship’s main dimensions.
- Understand a functional model for the shipping firm and its business ideas.
- Understand and be able to perform economic analyses in preliminary design and operation of ships and semi submersibles.

Lectures, exercises and project assignment (term paper). Understanding and ability to perform realistic marine systems design projects. 75% of the the exercises to be approved before the final written exam. The written exam counts 70% and the project (term paper) 30%, the exam may include questions from the project. The final result from the term paper and the exam is given as a letter grade. Postponed/repeated exams may be oral.